Extract Password field from Registration into a reusable component

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/auth/PassphraseField.tsx

@@ -0,0 +1,121 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, {PureComponent, RefCallback, RefObject} from "react";
+import classNames from "classnames";
+import zxcvbn from "zxcvbn";
+
+import SdkConfig from "../../../SdkConfig";
+import withValidation, {IFieldState, IValidationResult} from "../elements/Validation";
+import {_t, _td} from "../../../languageHandler";
+import Field from "../elements/Field";
+
+interface IProps {
+    id?: string;
+    className?: string;
+    minScore: 0 | 1 | 2 | 3 | 4;
+    value: string;
+    fieldRef: RefCallback<Field> | RefObject<Field>;
+
+    label?: string;
+    labelEnterPassword?: string;
+    labelStrongPassword?: string;
+    labelAllowedButUnsafe?: string;
+
+    onChange(ev: KeyboardEvent);
+    onValidate(result: IValidationResult);
+}
+
+interface IState {
+    complexity: zxcvbn.ZXCVBNResult;
+}
+
+class PassphraseField extends PureComponent<IProps, IState> {
+    static defaultProps = {
+        label: _td("Password"),
+        labelEnterPassword: _td("Enter password"),
+        labelStrongPassword: _td("Nice, strong password!"),
+        labelAllowedButUnsafe: _td("Password is allowed, but unsafe"),
+    };
+
+    public readonly validate = withValidation<this>({
+        description: function() {
+            const complexity = this.state.complexity;
+            const score = complexity ? complexity.score : 0;
+            return <progress className="mx_PassphraseField_progress" max={4} value={score} />;
+        },
+        rules: [
+            {
+                key: "required",
+                test: ({ value, allowEmpty }) => allowEmpty || !!value,
+                invalid: () => _t(this.props.labelEnterPassword),
+            },
+            {
+                key: "complexity",
+                test: async function({ value }) {
+                    if (!value) {
+                        return false;
+                    }
+                    const { scorePassword } = await import('../../../utils/PasswordScorer');
+                    const complexity = scorePassword(value);
+                    this.setState({ complexity });
+                    const safe = complexity.score >= this.props.minScore;
+                    const allowUnsafe = SdkConfig.get()["dangerously_allow_unsafe_and_insecure_passwords"];
+                    return allowUnsafe || safe;
+                },
+                valid: function() {
+                    // Unsafe passwords that are valid are only possible through a
+                    // configuration flag. We'll print some helper text to signal
+                    // to the user that their password is allowed, but unsafe.
+                    if (this.state.complexity.score >= this.props.minScore) {
+                        return _t(this.props.labelStrongPassword);
+                    }
+                    return _t(this.props.labelAllowedButUnsafe);
+                },
+                invalid: function() {
+                    const complexity = this.state.complexity;
+                    if (!complexity) {
+                        return null;
+                    }
+                    const { feedback } = complexity;
+                    return feedback.warning || feedback.suggestions[0] || _t("Keep going...");
+                },
+            },
+        ],
+    });
+
+    onValidate = async (fieldState: IFieldState) => {
+        const result = await this.validate(fieldState);
+        this.props.onValidate(result);
+        return result;
+    };
+
+    render() {
+        return <Field
+            id={this.props.id}
+            className={classNames("mx_PassphraseField", this.props.className)}
+            ref={this.props.fieldRef}
+            type="password"
+            autoComplete="new-password"
+            label={_t(this.props.label)}
+            value={this.props.value}
+            onChange={this.props.onChange}
+            onValidate={this.onValidate}
+        />
+    }
+}
+
+export default PassphraseField;

src/components/views/auth/RegistrationForm.js

@@ -29,7 +29,7 @@ import SdkConfig from '../../../SdkConfig';
 import { SAFE_LOCALPART_REGEX } from '../../../Registration';
 import withValidation from '../elements/Validation';
 import {ValidatedServerConfig} from "../../../utils/AutoDiscoveryUtils";
-import ZxcvbnProgressBar from "../elements/ZxcvbnProgressBar";
+import PassphraseField from "./PassphraseField";
 
 const FIELD_EMAIL = 'field_email';
 const FIELD_PHONE_NUMBER = 'field_phone_number';
@@ -264,60 +264,10 @@ export default createReactClass({
         });
     },
 
-    async onPasswordValidate(fieldState) {
-        const result = await this.validatePasswordRules(fieldState);
+    onPasswordValidate(result) {
         this.markFieldValid(FIELD_PASSWORD, result.valid);
-        return result;
     },
 
-    validatePasswordRules: withValidation({
-        description: function() {
-            const complexity = this.state.passwordComplexity;
-            const score = complexity ? complexity.score : 0;
-            return <ZxcvbnProgressBar value={score} className="mx_AuthBody_passwordScore" />;
-        },
-        rules: [
-            {
-                key: "required",
-                test: ({ value, allowEmpty }) => allowEmpty || !!value,
-                invalid: () => _t("Enter password"),
-            },
-            {
-                key: "complexity",
-                test: async function({ value }) {
-                    if (!value) {
-                        return false;
-                    }
-                    const { scorePassword } = await import('../../../utils/PasswordScorer');
-                    const complexity = scorePassword(value);
-                    this.setState({
-                        passwordComplexity: complexity,
-                    });
-                    const safe = complexity.score >= PASSWORD_MIN_SCORE;
-                    const allowUnsafe = SdkConfig.get()["dangerously_allow_unsafe_and_insecure_passwords"];
-                    return allowUnsafe || safe;
-                },
-                valid: function() {
-                    // Unsafe passwords that are valid are only possible through a
-                    // configuration flag. We'll print some helper text to signal
-                    // to the user that their password is allowed, but unsafe.
-                    if (this.state.passwordComplexity.score >= PASSWORD_MIN_SCORE) {
-                        return _t("Nice, strong password!");
-                    }
-                    return _t("Password is allowed, but unsafe");
-                },
-                invalid: function() {
-                    const complexity = this.state.passwordComplexity;
-                    if (!complexity) {
-                        return null;
-                    }
-                    const { feedback } = complexity;
-                    return feedback.warning || feedback.suggestions[0] || _t("Keep going...");
-                },
-            },
-        ],
-    }),
-
     onPasswordConfirmChange(ev) {
         this.setState({
             passwordConfirm: ev.target.value,
@@ -479,13 +429,10 @@ export default createReactClass({
     },
 
     renderPassword() {
-        const Field = sdk.getComponent('elements.Field');
-        return <Field
+        return <PassphraseField
             id="mx_RegistrationForm_password"
-            ref={field => this[FIELD_PASSWORD] = field}
-            type="password"
-            autoComplete="new-password"
-            label={_t("Password")}
+            fieldRef={field => this[FIELD_PASSWORD] = field}
+            minScore={PASSWORD_MIN_SCORE}
             value={this.state.password}
             onChange={this.onPasswordChange}
             onValidate={this.onPasswordValidate}

src/components/views/elements/Validation.tsx

@@ -19,7 +19,7 @@ limitations under the License.
 import React from "react";
 import classNames from "classnames";
 
-type Data = Pick<IValidateArgs, "value" | "allowEmpty">;
+type Data = Pick<IFieldState, "value" | "allowEmpty">;
 
 interface IRule<T> {
     key: string;
@@ -32,15 +32,20 @@ interface IRule<T> {
 
 interface IArgs<T> {
     rules: IRule<T>[];
-    description(): React.ReactChild;
+    description(this: T): React.ReactChild;
 }
 
-interface IValidateArgs {
+export interface IFieldState {
     value: string;
     focused: boolean;
     allowEmpty: boolean;
 }
 
+export interface IValidationResult {
+    valid?: boolean;
+    feedback?: React.ReactChild;
+}
+
 /**
  * Creates a validation function from a set of rules describing what to validate.
  * Generic T is the "this" type passed to the rule methods
@@ -62,7 +67,7 @@ interface IValidateArgs {
  *     the overall validity and a feedback UI that can be rendered for more detail.
  */
 export default function withValidation<T = undefined>({ description, rules }: IArgs<T>) {
-    return async function onValidate({ value, focused, allowEmpty = true }: IValidateArgs) {
+    return async function onValidate({ value, focused, allowEmpty = true }: IFieldState): Promise<IValidationResult> {
         if (!value && allowEmpty) {
             return {
                 valid: null,